Hollywood Headlines: A crazy week in review

CaptionCNN anchor Don Lemon in Twitter spat with Jonah Hill

CNN / Los Angeles Times

Social media can foster odd friends and even odder enemies. Deadmau5 and Madonna recently got into it on Twitter. But the oddest Twitter fight pair in recent memory may be CNN anchor Don Lemon and Jonah Hill, star of "21 Jump Street." The fight began Thursday night when Lemon took to his Twitter feed and announced, "Said hi to @jonahhill in hotel. Think he thought i was bellman. Didn't know his name til bellman told me. A lesson to always be kind." According to several reports, Hill responded with a tweet that he has since deleted: "@DonLemonCNN I said hi what do you want me to do move in with you? I was in a hurry. Didn't realize you were a 12 year old girl. Peace." Full story: CNN anchor Don Lemon in Twitter spat with Jonah Hill

Social media can foster odd friends and even odder enemies. Deadmau5 and Madonna recently got into it on Twitter. But the oddest Twitter fight pair in recent memory may be CNN anchor Don Lemon and Jonah Hill, star of "21 Jump Street." The fight began Thursday night when Lemon took to his Twitter feed and announced, "Said hi to @jonahhill in hotel. Think he thought i was bellman. Didn't know his name til bellman told me. A lesson to always be kind." According to several reports, Hill responded with a tweet that he has since deleted: "@DonLemonCNN I said hi what do you want me to do move in with you? I was in a hurry. Didn't realize you were a 12 year old girl. Peace." Full story: CNN anchor Don Lemon in Twitter spat with Jonah Hill (CNN / Los Angeles Times)

At a Sunday show in St. Paul, Minn., Madonna revealed that she'd extended an olive branch to Lady Gaga and invited her to come join in a duet. "You know, I invited her onstage to sing with me. But she turned me down," the pop diva told the crowd. "It's OK. I've been rejected before. It builds a little character." The news shouldn't be surprising. Tension has existed between the pop icons ever since Madonna commented on criticism of Gaga's song "Born This Way." Many observers felt it sounded too similar to Madge's classic "Express Yourself." Full story: Madonna: Lady Gaga 'turned me down' on duet offer | Lady Gaga leaks Kendrick Lamar demo

At a Sunday show in St. Paul, Minn., Madonna revealed that she'd extended an olive branch to Lady Gaga and invited her to come join in a duet. "You know, I invited her onstage to sing with me. But she turned me down," the pop diva told the crowd. "It's OK. I've been rejected before. It builds a little character." The news shouldn't be surprising. Tension has existed between the pop icons ever since Madonna commented on criticism of Gaga's song "Born This Way." Many observers felt it sounded too similar to Madge's classic "Express Yourself." Full story: Madonna: Lady Gaga 'turned me down' on duet offer | Lady Gaga leaks Kendrick Lamar demo (Michael Rozman / Warner Bros. / AP)